Hi, this is Joe Biden. I'm speaking to you from the University of Pittsburgh, where I just spoke to students here about what we've done to help ease the burden on them when it comes to the rising cost
Every new media technology raises privacy concerns. 每个新的媒体技术都会引起隐私问题。 In fact, in the US the very first major debates about privacy were in response to technologies that were relatively new at the tim
Over the years, I found that animations aren't just useful for communicating an idea, 多年以来，我发现动画不仅仅便于交流思想， but they're also really useful for exploring a hypothesis. 它们同样在探索假说上发挥作用。 Biologists for the
